Tian Jiang created IOTDB-722:
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             Summary: [Distributed] Support mode consistencies
                 Key: IOTDB-722
                 URL: https://issues.apache.org/jira/browse/IOTDB-722
             Project: Apache IoTDB
          Issue Type: Improvement
            Reporter: Tian Jiang


We only support mid-consistency now, which is that we will first try to 
synchronize with the leader to reach strong consistency, but if there is a 
time-out, we will give up and just use current data which results in a weak 
consistency.

So there are two other consistencies to support: Strong consistency, if there 
is a time-out, instead of using local data, directly report an error to the 
user. Weak consistency, do not synchronize with the leader and simply use the 
local data.



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